.project-detail-section {
  border-top: 1px solid #ccc;
}

.custom-nav-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: #e0e0e0;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #000 !important;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s ease;
  font-weight: bold;
}

.bi-chevron-right::before, .bi-chevron-left::before {
    font-weight: bold !important;
}

.custom-nav-btn:hover {
  background-color: #ddd;
}

.custom-nav-btn:focus {
  outline: none;
}

#thumbnailGallery {
  max-width: 676px !important;
  margin-left: auto !important;
  margin-right: auto !important;
}

@media (max-width: 767px) {
  .project-detail-title {
    font-size: 1.6rem;
    line-height: 2.2rem;
  }
}